Leading Countries by Shelter Count
Switzerland: ~370,000 shelters, providing enough capacity to cover its entire population.
Sweden: ~65,000 civil defense shelters built extensively through Cold War mandates.
Finland: ~50,000 shelters, featuring advanced underground complexes in major cities.
Norway: ~25,000 public and private shelter structures.
South Korea: ~17,000 underground spaces, including designated subway stations and municipal facilities.
Russia: ~16,000 large-scale military and Soviet-era civil defense command structures.
Israel: ~12,000 major public/institutional facilities alongside over a million mandated reinforced private rooms (mamad).
United States: ~10,000 government, continuity-of-government, and legacy fallout shelters.
China: ~8,000 deep military command networks and underground urban defense tunnels.
North Korea: ~8,000 extensive underground military installations and reinforced subterranean civilian tunnels.